[转]Ionic 实现双击返回键退出功能

本文转自：http://ionichina.com/topic/5514b539b6421f9166aa5f88

一、准备 Toast插件 插件地址：cordova plugin add https://github.com/EddyVerbruggen/Toast-PhoneGap-Plugin.git 二：代码

.run(function ($ionicPlatform, $rootScope, $location, $timeout, $ionicHistory, $cordovaToast) {
        $ionicPlatform.ready(function ($rootScope) {
            // Hide the accessory bar by default (remove this to show the accessory bar above the keyboard
            // for form inputs)
            if (window.cordova && window.cordova.plugins.Keyboard) {
                cordova.plugins.Keyboard.hideKeyboardAccessoryBar(true);
            }
            if (window.StatusBar) {
                // org.apache.cordova.statusbar required
                StatusBar.styleDefault();
            }
        });
        //双击退出
        $ionicPlatform.registerBackButtonAction(function (e) {
            //判断处于哪个页面时双击退出
            if ($location.path() == '/tab/news') {
                if ($rootScope.backButtonPressedOnceToExit) {
                    ionic.Platform.exitApp();
                } else {
                    $rootScope.backButtonPressedOnceToExit = true;
                    $cordovaToast.showShortTop('再按一次退出系统');
                    setTimeout(function () {
                        $rootScope.backButtonPressedOnceToExit = false;
                    }, 2000);
                }
            }
            else if ($ionicHistory.backView()) {
                $ionicHistory.goBack();
            } else {
                $rootScope.backButtonPressedOnceToExit = true;
                $cordovaToast.showShortTop('再按一次退出系统');
                setTimeout(function () {
                    $rootScope.backButtonPressedOnceToExit = false;
                }, 2000);
            }
            e.preventDefault();
            return false;
        }, 101);
    })